diff options
Diffstat (limited to 'background/page_actions_server.js')
| -rw-r--r-- | background/page_actions_server.js | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/background/page_actions_server.js b/background/page_actions_server.js deleted file mode 100644 index 67c9b9e..0000000 --- a/background/page_actions_server.js +++ /dev/null @@ -1,149 +0,0 @@ -/** - * This file is part of Haketilo. - * - * Function: Serving page actions to content scripts. - * - * Copyright (C) 2021 Wojtek Kosior - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * As additional permission under GNU GPL version 3 section 7, you - * may distribute forms of that code without the copy of the GNU - * GPL normally required by section 4, provided you include this - * license notice and, in case of non-source distribution, a URL - * through which recipients can access the Corresponding Source. - * If you modify file(s) with this exception, you may extend this - * exception to your version of the file(s), but you are not - * obligated to do so. If you do not wish to do so, delete this - * exception statement from your version. - * - * As a special exception to the GPL, any HTML file which merely - * makes function calls to this code, and for that purpose - * includes it by reference shall be deemed a separate work for - * copyright law purposes. If you modify this code, you may extend - * this exception to your version of the code, but you are not - * obligated to do so. If you do not wish to do so, delete this - * exception statement from your version. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <https://www.gnu.org/licenses/>. - * - * I, Wojtek Kosior, thereby promise not to sue for violation of this file's - * license. Although I request that you do not make use of this code in a - * proprietary program, I am not going to enforce this in court. - */ - -#IMPORT common/storage_light.js AS light_storage -#IMPORT common/connection_types.js AS CONNECTION_TYPE - -#FROM common/browser.js IMPORT browser -#FROM common/message_server.js IMPORT listen_for_connection -#FROM background/storage.js IMPORT get_storage -#FROM common/stored_types.js IMPORT TYPE_PREFIX -#FROM common/sha256.js IMPORT sha256 -#FROM common/ajax.js IMPORT make_ajax_request - -var storage; -var handler; - -// TODO: parallelize script fetching -async function send_scripts(components, port, processed_bags) -{ - for (let [prefix, name] of components) { - if (prefix === TYPE_PREFIX.BAG) { - if (processed_bags.has(name)) { - console.log(`preventing recursive inclusion of bag ${name}`); - continue; - } - - var bag = storage.get(TYPE_PREFIX.BAG, name); - - if (bag === undefined) { - console.log(`no bag in storage for key ${name}`); - continue; - } - - processed_bags.add(name); - await send_scripts(bag, port, processed_bags); - - processed_bags.delete(name); - } else { - let script_text = await get_script_text(name); - if (script_text === undefined) - continue; - - port.postMessage(["inject", [script_text]]); - } - } -} - -async function get_script_text(script_name) -{ - try { - let script_data = storage.get(TYPE_PREFIX.SCRIPT, script_name); - if (script_data === undefined) { - console.log(`missing data for ${script_name}`); - return; - } - let script_text = script_data.text; - if (!script_text) - script_text = await fetch_remote_script(script_data); - return script_text; - } catch (e) { - console.log(e); - } -} - -async function fetch_remote_script(script_data) -{ - try { - let xhttp = await make_ajax_request("GET", script_data.url); - if (xhttp.status === 200) { - let computed_hash = sha256(xhttp.responseText); - if (computed_hash !== script_data.hash) { - console.log(`Bad hash for ${script_data.url}\n got ${computed_hash} instead of ${script_data.hash}`); - return; - } - return xhttp.responseText; - } else { - console.log("script not fetched: " + script_data.url); - return; - } - } catch (e) { - console.log(e); - } -} - -function handle_message(port, message, handler) -{ - port.onMessage.removeListener(handler[0]); - console.debug(`Loading payload '${message.payload}'.`); - - const processed_bags = new Set(); - - send_scripts([message.payload], port, processed_bags); -} - -function new_connection(port) -{ - console.log("new page actions connection!"); - let handler = []; - handler.push(m => handle_message(port, m, handler)); - port.onMessage.addListener(handler[0]); -} - -async function start() -{ - storage = await get_storage(); - - listen_for_connection(CONNECTION_TYPE.PAGE_ACTIONS, new_connection); -} -#EXPORT start |